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Finding the Fourth Proportional to 200,317.52, 276,625.50 and 128,821.66

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Solution

The fourth proportional to 200,317.52, 276,625.50 and 128,821.66 is: 177,894.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,317.52 : 276,625.50 = 128,821.66 : x
  2. Step 2: Convert to fraction form
    200,317.52/276,625.50 = 128,821.66/x
  3. Step 3: Cross multiply
    200,317.52x = 276,625.50 × 128,821.66
  4. Step 4: Simplify right side
    200,317.52x = 35,635,356,108.33
  5. Step 5: Solve for x
    x = 35,635,356,108.33/200,317.52
  6. Step 6: Final answer
    x = 177,894.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.